Commit c68d4632 authored Jul 21, 2021 by Heiko Carstens

s390/hwcaps: add sanity checks



Add BUILD_BUG_ON() sanity checks to make sure the hwcap string array
contains a string for each hwcap.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

parent 95655495

arch/s390/include/asm/elf.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -114,6 +114,7 @@ enum {
		HWCAP_NR_VXRS_PDE2 = 19,
		HWCAP_NR_NNPA = 20,
		HWCAP_NR_PCI_MIO = 21,
		HWCAP_NR_MAX
		};

		/* Bits present in AT_HWCAP. */
		@@ -142,6 +143,7 @@ enum {

		enum {
		HWCAP_INT_NR_SIE = 0,
		HWCAP_INT_NR_MAX
		};

		/* Internal bits, not exposed via elf */

arch/s390/kernel/processor.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -141,6 +141,8 @@ static void show_cpu_summary(struct seq_file m, void v)
		};
		int i, cpu;

		BUILD_BUG_ON(ARRAY_SIZE(hwcap_str) != HWCAP_NR_MAX);
		BUILD_BUG_ON(ARRAY_SIZE(int_hwcap_str) != HWCAP_INT_NR_MAX);
		seq_printf(m, "vendor_id : IBM/S390\n"
		"# processors : %i\n"
		"bogomips per cpu: %lu.%02lu\n",